Ground Fault Protection; Emergency Stop Devices - ABB ACS800 Series Hardware Manual

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Ground fault protection

The drive is equipped with an internal ground fault protective function to protect the
unit against ground faults in the motor and motor cable. This is not a personal safety
or a fire protection feature. The ground fault protective function can be disabled with
a parameter, refer to the appropriate ACS800 Firmware Manual.
The EMC filter of the drive includes capacitors connected between the main circuit
and the frame. These capacitors and long motor cables increase the ground leakage
current and may cause fault current circuit breakers to function.

Emergency stop devices

For safety reasons, install the emergency stop devices at each operator control
station and at other operating stations where emergency stop may be needed.
Note: Pressing the stop key (
an emergency stop of the motor or separate the drive from dangerous potential.
Planning the electrical installation
) on the control panel of the drive does not generate